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ABCOOLAIR vs LITHZEN: heat pump ratings compared

One of these brands has too few models with every rating for an overall score; see each rating below.

Covers heat pumps sold new today (R-454B and R-32 refrigerant). See older R-410A models · Updated

ABCOOLAIR

58%

of similar heat pumps beaten by its typical model

Above average

6 models listed

LITHZEN

—

of similar heat pumps beaten by its typical model

Not enough rated models

6 models listed

Rating by ratingEach bar is the share of same-size, same-type heat pumps that a typical model beats, so the two brands compare fairly even if they make different sizes.
  • Efficiency on a 5°F dayCOP at 5°FABCOOLAIR: Beats 52%LITHZEN: Not rated
  • Heating power kept at 5°FCapacity at 5°F vs 47°FABCOOLAIR: Beats 29%LITHZEN: Not rated
  • Winter-long heating efficiencyHSPF2ABCOOLAIR: Beats 55%LITHZEN: Beats 3%
  • Summer-long cooling efficiencySEER2ABCOOLAIR: Beats 51%LITHZEN: Beats 10%
  • Hot-day cooling efficiencyEER2ABCOOLAIR: Beats 91%LITHZEN: Beats 13%

Average (50%)Dashed outline: the other brand, for comparison

Want ranks, distributions per size class and cold-weather curves? Switch to Advanced

Rebate standards

Share of each brand’s models that meet the level. Programs can have other rules too.

  • CEE 2025

    ABCOOLAIR
    50%
    LITHZEN
    0%

  • Xcel CC

    ABCOOLAIR
    0%
    LITHZEN
    0%

  • CEE Advanced

    ABCOOLAIR
    0%
    LITHZEN
    0%

  • ENERGY STAR CC

    ABCOOLAIR
    0%
    LITHZEN
    0%

Top cold-climate picks, ductless up to 1.5 tons

Only units that keep at least 70% of their heat at 5°F, ranked on heat kept, efficiency at 5°F and seasonal efficiency (HSPF2), against units their size.

Showing Ductless, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

ABCOOLAIR

No ductless, up to 1.5 tons model from ABCOOLAIR.

LITHZEN

None of LITHZEN’s ductless, up to 1.5 tons models qualifies.

These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.

Next steps

The advanced view adds ranks, both brands’ models inside every size class, standout models per rating and cold-weather curves.

Open the advanced view